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Grade 27 Titanium vs. EN 1.4911 Stainless Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.4911 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is EN 1.4911 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 27
11
Fatigue Strength, MPa 170
530
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
76
Shear Strength, MPa 180
640
Tensile Strength: Ultimate (UTS), MPa 270
1070
Tensile Strength: Yield (Proof), MPa 230
970

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Maximum Temperature: Mechanical, °C 320
700
Melting Completion (Liquidus), °C 1660
1450
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
20
Thermal Expansion, µm/m-K 8.7
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 37
20
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 33
3.4
Embodied Energy, MJ/kg 530
49
Embodied Water, L/kg 320
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
120
Resilience: Unit (Modulus of Resilience), kJ/m3 240
2410
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 17
38
Strength to Weight: Bending, points 21
30
Thermal Diffusivity, mm2/s 8.8
5.4
Thermal Shock Resistance, points 21
37

Alloy Composition

Boron (B), % 0
0.0050 to 0.015
Carbon (C), % 0 to 0.080
0.050 to 0.12
Chromium (Cr), % 0
9.8 to 11.2
Cobalt (Co), % 0
5.0 to 7.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
75.7 to 83.8
Manganese (Mn), % 0
0.3 to 1.3
Molybdenum (Mo), % 0
0.5 to 1.0
Nickel (Ni), % 0
0.2 to 1.2
Niobium (Nb), % 0
0.2 to 0.5
Nitrogen (N), % 0 to 0.030
0 to 0.035
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.025
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0.1 to 0.8
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 99 to 99.92
0
Tungsten (W), % 0
0 to 0.7
Vanadium (V), % 0
0.1 to 0.4
Residuals, % 0 to 0.4
0